{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "964257878",
    "entityType": "User",
    "nonce": "0x176e11c827f55d02df5f07ef92b6bac27990c07de08a5ea64542551bc3b7efec",
    "signature": "0x74fc7bffe2b9f7bf91a885de0f1e3f096d1891801a285771c723593ef1d9ebd2723f2b79f8f808d3ccc11ec19c0ed89c5bfd625da9808a794a01ec7f8eeb9e6f1c",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}